Manipulative appliance



Patented Sept. 6, 1927.

UNITED STATES PATENT OFFICE.

HANS P. DAI-ILSTRAND, OF WAUWATOSA, WISCONSIN, ASSIGNOR TO ALLIS-GI-IALMERS MANUFACTURING COMPANY, OF MILWAUKEE,- WISCONSIN, A CORPORATION OF DELAWARE.

MANIPULATIVE APPLIANCE.

Application filed March 22, 1924. SeriaI No. 701,017.

This invention relates generally to improvements in the construction and operation of manipulative appliances, the 1mproven'ient being disclosed herein as speclfically applied to a wrench of the socket type.

An object of the invention is to provide an improved manipulative appliance 'W-ll1( l1 is simple in construction and efficient 1n operation.

The ordinary socket wrench comprising a shank having a polygonal sectioned socket in one end and means associable with the opposite end for turning the shank, has heretofore been in common use for the purpose ofmanipulating nuts, bolts and the like. When utilizing an ordinary socket wrench to manipulate a nut or the like located beneath a flange or other structure, the shank ofthe wrench must be held in engagement with the nut while manipulation is being effected. When the structure adjoining the nut is relatively hot, as is frequently the case where'steam connections are disposed nearby, it is dangerous. and often impossible to hold the wrench in place for any great length of time. WVhen the wrench is relatively heavy as is necessary for large nuts, it frequently requires more than one man to manipulate and to hold the wrench in place. A further objection to the ordlnary socket wrench, is that the nut is free to fall from the wrench socket when the shank is inverted, thereby permitting the nut to fall into adjacent machinery or become lost.

A more specific object of the present invention is to provide a socket wrench which may be readily locked to the nut or other element which is to be manipulated thereby. The invention provides for convenient releasing of the nut from within the wrench socket, when desired. These and other obj ects and advantages of the present improvement will be apparent in the course of the following description. T A clear conception of an embodiment of the present improvement as applied to a socket wrench and of the operation of the wrench, may be had by referring to the drawing accompanying and forming a part of this specification in which like reference characters designate the same or similar parts in the several views.

Fig. 1 is a side elevation of an improved socket wrench applied to a nut, associated with the lower end of a stud.

Fig. 2 is a part sectional side elevation of the improved socket wrench, the View being taken at an angle of 90 degrees about a vertical axis, relatively to the view ofFig. 1.

Fig. 3 is an end view of the improved socket wrench looking toward the socket, thereof and showing a nut and stud disposed within the socket, a section having been taken through the stud along the line III III of Fig. 1.

Fig. 4 is a transverse sectional view through the wrench, nut and stud the section being taken along the line I VIV of Fig. 2 looking in'the direction of'the arrows.

The improved wrench comprises in general a shank 3 having a hexagonal socket 13 in one end thereof and having four through holes 11 in the other end thereof, and an adj ustable locking member or collar 2 rotatably associated with the socketed end of the shank 3. The socketed end of the shank 3 is provided with a cylindrical outer surface 15 which coacts with a bore formed within the collar 2, the collar 2 being provided with diametrically opposite slots 8 adjacent to the. bore 15 within which radial pins 9 secured to the shank 3' are disposed. The slots 8 havev central andend notches 14 in their side walls for the purpose of indicating various positions of the, pins 9. The collar 2 is. alsoprovided with diametrically opposite radialholes 10 adapted to receive apin or spanner wrench when effecting adjustment of the collar 2 relatively to the shank 3. The end of the collar 2 is provided with an inwardly projecting flange having'therein a hexagonal opening of substantially the same dimensions as the socket 13 of the shank 3. When the pins 9 of the shank 3 engage the medial notches 14 of the slots 8, the hexagonal opening of the collar 2 is in alinement with the socket 13 of the shank 3. When the pins 9 engage either set of end notches 14 of the slots 8, then the sides of the hexagonal opening in the collar 2 are disposed as illustrated in Figs. 3 and 4, relatively to the socket 13 in the shank 3.

vThe nuts 5 specifically disclosed herein are of special formation having cylindrical portions 12 formed adjacent to their clamping faces. The cylindrical portions 12 may obviously be formed either integral with the nuts 5, or separate, these cylindrical portions merely being washers of ordinary form if formed separately from the nuts. The studs 1 are screwed into either one or the other of the flanges 6, 7 and pass freely through openings in the other flange, the nuts 5 being applied to the projecting ends of the studs 4.

When applying the wrench to a nut 5 the collar 2 is first adjusted to bring the pins 9 in alinement with the medial notches 14: of

the slots 8 whereupon the hexagonal opening in the collar 2 is in alinement with the hexagonal socket 13 of the shank 3. The wrench may then be freely applied to or removed from a nut 5. If the nut 5 is of ordinary standard construction and no cylindrical portion 12 is provided, then the wrench is adapted to be used the same as an ordinary socket wrench. If however the nut 5 ias been provided with a cylindrical portion 12, the collar 2 may be shifted about the wrench axis to one or the other extreme posi tion, depending upon the direction of rotation desired, to bring the sides of the hexagonal opening in the collar 2 across the corners of the nut 5 as shown in Fig. 8, whereupon the shank 8 is positively locked to the nut. The shank 3 may then be manipulated by inserting a bar in the holes 11, to turn the nut 5 without making any other provision for holding the shank in place. After the nut 5 has been removed from the stud 4, the nut will remain within the socket 13 of the shank 3 until the collar 2 is again shifted to mid position whereupon the nut 5 is freely removable from within the socket 18.

If the wrench is utilized to manipulate a nut 5 from above, the friction between the end surface of the collar 2 and the adjacent element or flange 6 is suiiicient to cause automatic shifting of the collar 2 relatively to the shank 3 during turning of the latter. It will be obvious that the wrench is capable of use for manipulating standard as well as special nuts 5 and that locking may readily be effected with standard nuts if a washer or other substitute for the cylindrical portion 12 is provided. The nut 5 is effectively locked to the wrench thereby permitting use details of construction and of operation herein shown and described, for various modifications within the scope of the claims may occur to a person skilled in the art.

It is claiined and desired to secure by Let ters Patent:

1. In combination, a member having a polygonal socket for engaging an element to rotate the same, and a collar carried by said member and having a polygonal opening a djoining said socket, said collar being rotatable in opposite directions froma central setting to position the sides of said opening out of alinement with the corresponding sides of said socket for locking an element in said socket.

2. In combination, a member having a polygonal socket for engaging an element to rotate the same and also having a portion of reduced diameter provided with an outer cylindrical surface adjacent to the end of said socket, and a collar rotatably supported upon said cylindrical surface and having an external diameter substantially equal to the maximum external diameter of said member, said collar having a polygonal opening adjoining said socket and being rotatable in opposite directions froma central setting to position the sides of said opening out of alinement with the corresponding sides of said socket for locking an element in said socket.

In testimony whereof, the signature of the inventor is affixed hereto.

HANS P. DAHLSTRAND. 

